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Finding the Fourth Proportional to 101,572.41, 152,395.05 and 45,407.82

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Solution

The fourth proportional to 101,572.41, 152,395.05 and 45,407.82 is: 68,128.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,572.41 : 152,395.05 = 45,407.82 : x
  2. Step 2: Convert to fraction form
    101,572.41/152,395.05 = 45,407.82/x
  3. Step 3: Cross multiply
    101,572.41x = 152,395.05 × 45,407.82
  4. Step 4: Simplify right side
    101,572.41x = 6,919,926,999.29
  5. Step 5: Solve for x
    x = 6,919,926,999.29/101,572.41
  6. Step 6: Final answer
    x = 68,128.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.